Magnetic chitosan microsphere treatment agent and preparation method thereof

A technology of treatment agent and chitosan microspheres, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. The treatment effect is remarkable, the cost is low, and the effect of repeatability is strong

Inactive Publication Date: 2014-09-10
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there have been no relevant reports on the use of chitosan an

Method used

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  • Magnetic chitosan microsphere treatment agent and preparation method thereof
  • Magnetic chitosan microsphere treatment agent and preparation method thereof
  • Magnetic chitosan microsphere treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A water treatment agent is prepared in the following steps:

[0027] a. Pretreatment of tourmaline

[0028] Crush the tourmaline through a 200-mesh sieve, wash it with 5% NaOH solution for 5 to 7 times to remove the anions and cations attached to the surface, and then wash it with deionized water for the same number of times, then put it in an oven and dry it. use;

[0029] b. Preparation of superparamagnetic Fe3O4 powder

[0030] Weigh 5.56g FeSO 4 ·7H 2 O, 6.5g FeCl 3 and 1.7mL of concentrated hydrochloric acid were dissolved in 50mL of N 2Degas the distilled water, then add the above dropwise to 250mL of 1.0mol / L NaOH solution; stir in a water bath at 80°C at a slow speed (100r / min) for 5min, then stir mechanically at a rapid speed (2000r / min), and wait for the solution A black precipitate appeared in the solution, and the stirring was continued for 30 minutes; after the reaction was completed, it was left to cool down to room temperature, and the black precipi...

Embodiment 2～7

[0035] Embodiment 2~7: carry out by following each material and step, all the other are with embodiment 1.

[0036]

[0037]

[0038] The removal rate of the tourmaline / magnetic chitosan microspheres prepared above is 78% to 90% for the volatile phenol in the source water.

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Abstract

The invention provides a magnetic chitosan microsphere treatment agent, which is prepared by dissolving and uniformly mixing mixed powder of tourmaline and magnetic chitosan microspheres in sodium alginate and polyvinyl alcohol, and solidifying and balling. The magnetic chitosan microsphere is prepared by using superparamagnetic ferroferric oxide, 1 to 10 weight percent of chitosan acetic acid liquid, liquid paraffin, Span-80 and glutaraldehyde as reaction materials through an emulsion crosslinking method, wherein the mass ratio of the superparamagnetic ferroferric oxide to the chitosan acetic acid liquid is 1:(1-10), the volume ratio of the liquid paraffin to the Span-80 is (10-100):1, the volume ratio of the chitosan acetic acid liquid of superparamagnetic ferroferric oxide to mixed liquid of paraffin-Span-80 is 1:(1-10), and the volume ratio of the mixed liquid of superparaferroferric oxide, paraffin and Span-80 to glutaraldehyde is (5-50):1. According to the water treatment agent, the removal rate of volatile phenol in water is between 80 and 90 percent, and the removal rate of chromium in water is 93 percent; and the magnetic chitosan microsphere treatment agent has the advantages of large adsorption capacity, high purification efficiency, low cost, regeneration, no toxicity, no pollution to environment and the like.

Description

[0001] The present invention is a divisional application with an application date of September 23, 2011 and an application number of 201110284933.4. technical field [0002] The invention relates to a water treatment preparation, in particular to a water treatment agent with good effect on removing volatile phenol in water and a preparation method thereof, belonging to the field of water treatment. Background technique [0003] In recent years, the unique properties and structure of magnetic chitosan microspheres have attracted widespread attention, especially in the application research of water treatment, which has achieved good results. Magnetic chitosan can be used to remove Cu from water 2+ 、Cr 2+ , Hg 2+ , Zn 2+ , Pb 2+ , Ca 2+ 、Ag + And other metal ions, can also be used to treat organic wastewater, and can quickly reach equilibrium. Wong and G. Mckay et al. [22-23] Chitosan has done a detailed study on the treatment of printing and dyeing wastewater. The resu...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30B01J13/14C02F1/28C02F1/58C02F1/62
Inventor 朱启红夏红霞
Owner CHONGQING UNIV OF ARTS & SCI
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